At the funeral for Sabrina's grandmother, Nana, the Chance family meets Tamara (Melanie Griffith), Sabrina's mother; Nana's last will and testament has a significant impact on Sabrina and Jimmy's relationship.

A visiting social worker sees how the Chances take care of Maw Maw and suspects elder abuse; Sabrina asks Jimmy to get rid of a beloved t-shirt.

The Chance family devises a plan to break Maw Maw out of the nursing facility; Jimmy worries about his future sanity.

When Jimmy and Sabrina go on a marriage retreat, Virginia and Burt and Tamara and her lover tag along; Barney baby-sits Maw Maw.

Virginia becomes suspicious when Burt starts spending a lot of time at a local gay bar.

When Jimmy learns his parents briefly gave him up for adoption, he asks Sabrina to help him befriend the man who would have been his brother. Burt and Virginia wonder if Jimmy would have been better off with other parents.

The family participates in a 1K walk; Virginia and Burt feel the effects of aging; Jimmy has a difficult time supporting Sabrina when she gets into a fight with her ex-boyfriend.

When Jimmy leaves Hope with Sabrina for the day, Sabrina tries to prove her parenting skills. Virginia and Burt try to catch a squirrel bully.

Convinced that the world will end on Dec. 21, 2012, Virginia stocks up on supplies and makes her family train for the apocalypse. Jimmy tries to make Hope's Christmas special.

When Jimmy and Sabrina decide to buy a new car, they learn Burt and Virginia ruined Jimmy's credit when he was a child.

Jimmy participates in medical experiments to raise money for an engagement ring; when Jimmy finds the perfect ring at a pawn shop, it ends up being Virginia's.

Frank wants to throw Jimmy a memorable bachelor party, but Jimmy resists the idea, citing the crazy things that tend to happen when he goes wild (such as impregnating serial killers). But, when Sabrina convinces him to cut loose, things get a little out of control and Frank reveals an ulterior motive for encouraging Jimmy’s outlandish behavior.

It's Jimmy & Sabrina's wedding day, and Sabrina's mom has hired the camera crew from "Modern Family" to capture the event.

The whole family goes on a road trip to Los Angeles for a taping of Hope's favorite show, "Yo Zappa Do"; Virginia and Burt let Ricardo stay at their place, but their house guest quickly wears out his welcome.

Sabrina is visited by the Ghost of Arbor Day Past, Present and Future in the middle of the night when she clashes with the Chances over their observation of the eco-friendly holiday

Virginia and Burt learn that the contents of their storage locker -- including an incriminating home video -- are up for auction.

After Sabrina objects to the way the Chance family celebrates Arbor Day, she is visited by the ghosts of Arbor Day Past, Present and Future.

It's a "My Name is Earl" reunion as the Chances throw a birthday party for Hope. Jason Lee reprises his guest-star role as former rock star Smokey Floyd, and he is joined by guest stars Jaime Pressly, Ethan Suplee, Nadine Velazquez and Eddie Steeples as Natesville locals who all band together to save the party.

Sabrina is excited to introduce her new friend, Rachel (Hilary Duff), to the family, but Virginia and Burt are shocked when they realize Rachel is the girl who once broke Jimmy's heart.

After learning that he is Jewish, Burt prepares for the bar mitzvah he never had.

When Burt and Barney travel to Maw Maw's childhood home, they learn that her mother may still be alive.